fix(webservice): Namespaces and redundancies

redundant require statements, clean up install trait, standardize trait names, remove hard-coded php version require for composer.json

src/Database/ReferenceInstaller.php

@@ -14,7 +14,7 @@
 
 declare(strict_types=1);
 
-namespace Module\WsOrderreference\Database;
+namespace Websmid\WsOrderReference\Database;
 
 use Doctrine\DBAL\Connection;
 use Doctrine\DBAL\Exception as DBALException;